Oxygen absorber composition and oxygen absorber package

Abstract

The present invention provides an oxygen absorbing agent composition comprising a compound (A) having two or more tetralin rings, and a transition metal catalyst.

Description

TECHNICAL FIELD[0001]The present invention relates to an oxygen absorbing agent composition and an oxygen absorbing agent package using the oxygen absorbing agent composition.BACKGROUND ART[0002]For the purpose of preventing oxidation and performing long-term storing of various goods (objects to be stored) tending to be affected by oxygen and accordingly deteriorated or degraded, typified by, for example, food, beverages, pharmaceuticals and cosmetics, there have been used oxygen absorbing agents. The oxygen absorbing agents are used for removing the oxygen inside the vessels containing these goods.[0003]As oxygen absorbing agents, from the viewpoint of the oxygen absorbing performance, easiness in handling and safety, there have generally been used oxygen absorbing agents including iron powder as the main reaction agent. However, such iron-based oxygen absorbing agents respond to metal detectors, and hence it has been difficult to perform foreign matter inspection by using metal de...

AI Technical Summary

Benefits of technology

[0032]According to the present invention, it is possible to provide a novel oxygen absorbing agent composition being capable of realizing an oxygen absorbing agent not responding to a metal detector, being free from the occurrence of odor before and after the absorption of oxygen and having an excellent oxygen absorption performance, and an oxygen absorbing agent package using the novel oxygen absorbing agent composition. The oxygen absorbing agent composition and the like can absorb oxygen irrespective as to whether or not the object to be stored has moisture, and in addition, is free from the occurrence of odor before and after the absorption of oxygen, and hence can be used, without discriminating the application objects, over a wide range of applications to, for example, food, prepared food, beverages, pharmaceuticals and health food.

[0033]Hereinafter, the mode for carrying out the present invention (hereinafter, simply referred to as “the present embodiment”) is described in detail. The following present embodiment is presented as exemplification for describing the present invention, and the present invention is not intended to be limited only to the following contents. The present invention can be carried out as appropriately modified within the scope of the gist of the present invention.

[0034](Oxygen Absorbing Agent Composition and the Like)

[0035]The oxygen absorbing agent composition of the present embodiment includes a compound (A) having two or more tetralin rings and a transition metal catalyst. The oxygen absorbing agent composition of the present embodiment can exhibit an excellent oxygen absorbing capacity even at a high humidity or even at a low humidity. The occurrence of odor can also be suppressed. Moreover, the oxygen absorbing agent composition of the present embodiment need not use iron for absorbing oxygen, and hence can be a non-iron-based oxygen absorbing agent composition (substantially not containing iron).

[0036]As the compound (A), the compound is preferable which is represented by at least any one formula selected from the group consisting of the following general formulas (1) to (6), from the viewpoint of the easy availability of the raw material.

[0037]Examples of R in the general formulas (1) to (6) may include: a hydrogen atom, halogen atoms (such as a chlorine atom, a bromine atom and an iodine atom), alkyl groups (linear, branched or cyclic alkyl groups having 1 to 15 carbon atoms, preferably 1 to 6 carbon atoms, such as a methyl group, an ethyl group, an n-propyl group, an isopropyl group, a t-butyl group, an n-octyl group, a 2-ethylhexyl group, a cyclopropyl group and a cyclopentyl group), alkenyl groups (linear, branched or cyclic alkenyl groups having 2 to 10 carbon atoms, preferably 2 to 6 carbon atoms, such as a vinyl group and an allyl group), alkynyl groups (alkynyl groups having 2 to 10 carbon atoms, preferably 2 to 6 carbon atoms, such as an ethynyl group and a propargyl group), aryl groups (aryl groups having 6 to 16 carbon atoms, preferably 6 to 10 carbon atoms, such as a phenyl group and a naphthyl group), heterocyclic groups (monovalent groups obtained by eliminating one hydrogen atom from 5-membered ring or 6-membered ring aromatic or non-aromatic heterocyclic compounds having 1 to 12 carbon atoms, preferably 2 to 6 carbon atoms, such as a 1-pyrazolyl group, a 1-imidazolyl group and a 2-furyl group), a cyano group, a hydroxy group, a carboxyl group, ester groups, amide groups, a nitro group, alkoxy groups (linear, branched or cyclic alkoxy groups having 1 to 10 carbon atoms, preferably 1 to 6 carbon atoms, such as a methoxy group and an ethoxy group), aryloxy groups (aryloxy groups having carbon 6 to 12 carbon atoms, preferably 6 to 8 carbon atoms, such as a phenoxy group), acyl groups (a formyl group, alkyl carbonyl groups having 2 to 10 carbon atoms, preferably having 2 to 6 carbon atoms, and aryl carbonyl groups having 7 to 12 carbon atoms, preferably 7 to 9 carbon atoms, such as an acetyl group, a pivaloyl group and a benzoyl group), amino groups (alkyl amino groups having 1 to 10 carbon atoms, preferably 1 to 6 carbon atoms, anilino groups having 6 to 12 carbon atoms, preferably 6 to 8 carbon atoms, and heterocyclic amino groups having 1 to 12 carbon atoms, preferably 2 to 6 carbon atoms, such as an amino group, a methyl amino group and an anilino group), thiol groups, alkylthio groups (alkylthio groups having 1 to 10 carbon atoms, preferably 1 to 6 carbon atoms, such as a methylthio group and an ethylthio group), arylthio groups (arylthio groups having 6 to 12 carbon atoms, preferably 6 to 8 carbon atoms, such as a phenylthio group), heterocyclic thio groups (heterocyclic thio groups having 2 to 10 carbon atoms, preferably 1 to 6 carbon atoms, such as a 2-benzothiazolylthio group), and imide groups (imide groups having 2 to 10 carbon atoms, preferably 4 to 8 carbon atoms, such as an N-succinimide group and an N-phthalimide group).

Problems solved by technology

However, such iron-based oxygen absorbing agents respond to metal detectors, and hence it has been difficult to perform foreign matter inspection by using metal detectors.

Packages enclosing iron-based oxygen absorbing agents have possibility of ignition and hence cannot be heated with microwave ovens.

In addition, iron-based oxygen absorbing agents take advantage of the oxidation reaction of iron powder, and hence exhibit the oxygen absorption effect thereof only for the objects to be stored which are high-moisture systems; thus, the objects of the iron-based oxygen absorbing agents are limited to the objects to be stored which are high-moisture systems.

However, such vessels also have a problem such that such vessels cannot be used for performing foreign matter inspection with metal detectors, cannot be heated with microwave ovens, and are adaptable only to the objects to be stored which are high-moisture systems.

In addition, such vessels also suffer from a problem of insufficient internal visibility due to opacity.

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